[Snort-users] snort inline with jumbo frame

Russ Combs rcombs at ...1935...
Mon Sep 10 10:46:38 EDT 2012


Did you set the snaplen?

On Sun, Sep 9, 2012 at 11:34 PM, 王聲浩(Sheng-Hao Wang) <howz.wang at ...11827...>wrote:

>   Hi all,
>
>  I am trying to run snort inline with jumbo frame traffic, the size of
> packet could raise to 65524.
> But I face a weird phenomenon, when I enable jumbo frame, the throughput
> with snort inline decreases to very low.
>
> Here is my test result:
>
>
> jumbo frame baseline
>
> 525Mbps
>
> jumbo frame with snort inline
>
> 4Mbps
>
> MTU 1500 baseline
>
> 48Mbps
>
> MTU 1500 with snort inline
>
> 37Mbps
>
> My snort version is 2.9.2.3 and I use command "snort -N -d --daq nfq -Q -c
> /etc/snort/snort.conf".
>
> I have tried the solution of blog.inliniac.net/**
> 2008/01/23/improving-snort_**inlines-nfq-performance
> But it doesn't work.
>
> Does anyone have any idea? Thanks.
>
> --
> Best Regards,
> Sam
>
>
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